CALIPATRIA — A 24-year-old man was arrested by police here on suspicion of possessing a controlled substance after he was found carrying a syringe filled with 25 cc of heroine.

Calipatria Police Chief Reggie Gomez said a vehicle driven by Calipatria resident Hugo A. Gaytan was pulled over by police near the intersection of Sorenson Avenue and Alexandria Street around 1:30 p.m. Tuesday after an officer noticed Gaytan's vehicle was swerving.

Gaytan gave the officer permission to search the vehicle, Gomez said, at which time three syringes were found.

One contained a white substance police later identified as heroine, Gomez added.

The heroine was sent to the state Department of Justice for an official analysis, Gomez said.